We use our smartphones to do a lot of things, music, video games, film, book, photos, social media. Phones can now do it all. But as surprising as it may seem, most manufacturers do not natively offer a barcode reader. Fortunately, the Google Play Store is full of apps to scan a QR code. Here are the most popular apps..
Reading a QR code in Android
Casually, if you're using an Android smartphone, chances are that sooner or later you'll need a QR code reader. Because bar codes can be found everywhere. Books, boxes of green beans, clothes, impossible to escape. And his two-dimensional big brother, dubbed QR code, seems to have the same fate.
Unfortunately very few devices including high-end models over 600 euros offer this type of tool as standard. No need to search the app drawer of your mobile, you will not find anything. Manufacturers and operators are reluctant to provide a barcode reader on their devices..
How the QR code works
It is all the more unfortunate that the QR code has enormous potential. With one click, you can open a website, display a location on a GPS app, add a contact to your phone book, save an event in your calendar and even make a payment.
As you can see, the possibilities for applying the QR code are very wide. And the icing on the cake, it turns out to be very simple to use. To read a QR code, just launch the reader then place the camera lens in front of the code and wait one to two seconds, while the app decrypts the content..
Barcode scanner
Barcode Scanner is probably the best QR code app for Android. She can scan QR codes, barcodes and flashcodes. You can use it to obtain presentation sheets for various products (books, CDs, video games, medicines, etc.) but also compare prices on Google Shopping.
This player also has a history search function. The latter allows you to consult the latest information sought without having to rescan the product. 
Finally, be aware that Barcode Scanner also offers the possibility of sharing applications, contacts and website addresses with other smartphones.
You will understand, this application is a must for all owners of Android smartphones. The only concern, the recognition deserves to be a little faster. But rest assured, it's still very correct. Another regret, the application only works in landscape mode.
Kaspersky QR Code Scanner
There are dozens if not hundreds of QR code readers for Android. But few are able to detect malicious links redirecting Internet users to phishing sites or malicious programs (viruses or malware). Kapersy QR code is one of them.
Even if the QR code is certainly the easiest and fastest way to share information (URL, contact details, emails, etc.), it can also be used to transmit viruses. There are countless scams using this new communication medium.
Some cybercriminals have specialized in falsifying QR codes placed on billboards or advertisements in public places. Difficult then for an average user to distinguish the scam. 
To avoid this type of threat, the Kaspersky QR Code Scanner created by the famous antivirus software publisher checks during each scan that the link, image or text associated with the QR code is secure.